Article
Chemistry, Multidisciplinary
N. N. Mikheeva, V. Zaikovskii, Y. Larichev, G. Mamontov
Summary: Toluene, a typical volatile organic compound, is a hazardous material and the development of catalysts for its oxidation is crucial. The Ag-CeO2/SBA-15 catalysts show the highest catalytic activity in toluene oxidation, attributed to the synergistic effect between ceria and silver.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Aggeliki Papavasiliou, Benedetta Oliani, Mirko Scanferla, Elias Sakellis, Antonella Glisenti, Paolo Canu, Fotis K. Katsaros
Summary: Mesoporous multicomponent materials based on alumina are synthesized through a facile evaporation-induced-self-assembly method. The addition of citric acid is found to be crucial in obtaining high mesoscopic order and notable homogeneity. After thermal aging, the distribution of metal oxides and nanoporous nature are well-preserved, with a parallel nucleation of ceria nanoparticles into the semi-crystalline framework. The catalytic activity is drastically enhanced, especially for the Cu-Ce-Al system, due to the material's structural reconstruction and its effect on metal-support interaction.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Environmental Sciences
Aathira Bhaskaran, Deepika Sharma, Sounak Roy, Satyapaul A. Singh
Summary: NOx, SOx, and carbonaceous volatile organic compounds (VOCs) are harmful to the environment and their concentrations need to be controlled within prescribed limits. This article discusses various catalytic approaches for reducing NOx, SOx, and VOCs, including selective catalytic reduction, oxidation, redox methods, and adsorption using noble metal and non-noble metal catalysts. It also reviews different thermal treatment techniques, catalyst materials, advanced oxidation processes, and adsorption methods. The article addresses the challenges and potential advancements in developing novel technologies for simultaneous removal of NOx, SOx, and VOCs, and emphasizes the importance of material selection, properties, and mechanisms in improving existing abatement methods.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Maria Yaseen, Haopeng Jiang, Jinhe Li, Xiaohui Yu, M. Ashfaq Ahmad, Rai Nauman Ali, Lele Wang, Juan Yang, Qinqin Liu
Summary: Photocatalytic CO2 reduction using a CeO2/WO3 Z-scheme heterojunction was investigated in this study. The Z-scheme provided an interfacial free charge carrier and oxygen vacancies as active sites, leading to a significant increase in the CO2 photoconversion activity compared to pristine CeO2. The enhanced light absorption, low defective surface, and slow charge recombination rate in the composite contributed to the improved CO2 reduction efficiency.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Mahmoud A. Hefnawy, Sahar A. Fadlallah, Rabab M. El-Sherif, Shymaa S. Medany
Summary: Cu-doped NiO was synthesized as an efficient electrocatalyst for urea electrochemical oxidation, with morphology and chemical structure confirmed using various techniques. The catalytic activity and stability of the material were examined under different conditions, showing promising results for urea oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wending Bai, Mingbang Wu, Xiaolin Du, Wenli Gong, Yanhong Ding, Chuhan Song, Lin Liu
Summary: A novel multiple-phase heterostructure of reduced graphene oxide/copper oxide/cuprous oxide (rGO/CuO/Cu2O) was proposed, showing superior photocatalytic activity and enhanced stability due to the interface synergistic effect and polycrystalline structure, making it a promising Cu-based semiconductor photocatalyst for water purification.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Tianyu Li, Roman Tsyshevsky, Lucas Algrim, Monica McEntee, Erin M. Durke, Bryan Eichhorn, Christopher Karwacki, Michael R. Zachariah, Maija M. Kuklja, Efrain E. Rodriguez
Summary: This study investigates the interaction of DMMP on CeO2 surfaces, revealing that DMMP can dissociate on CeO2 at room temperature based on mass spectroscopy and infrared testing. Two dissociation pathways for DMMP on CeO2 surfaces are identified, with the (111) surface having the lowest activation energy barrier.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Thanh Son Cam, Shamil Omarovich Omarov, Maria Igorevna Chebanenko, Anastasia Sergeevna Sklyarova, Vladimir Nikolaevich Nevedomskiy, Vadim Igorevich Popkov
Summary: In this study, a series of CuO/CeO2 nanocomposite catalysts were synthesized using the urea-nitrate combustion method, with different CuO loadings. The CuO loading significantly influenced the phase composition, crystallite size, specific surface area, and catalytic performance of the catalysts. Among them, CuO/CeO2-20 catalyst showed high catalytic activity and stability in CO oxidation at low reaction temperature. The synergistic effect of redox pairs and oxygen vacancies contributed to the enhanced catalytic activity of CuO/CeO2-20 catalyst. Further research on doping oxides of other rare-earth and transition metals may further improve the catalytic performance of CuO/CeO2-20 sample.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Kveta Kupkova, Pavel Topka, Jana Balabanova, Martin Kostejn, Kvetuse Jiratova, Jean-Marc Giraudon, Jean-Francois Lamonier, Jaroslav Maixner, Frantisek Kovanda
Summary: The effect of Co-Cu oxide catalysts composition on their physicochemical properties and performance in the deep oxidation of ethanol was investigated. The catalysts were characterized and it was found that CuO promoted the reduction of Co3O4. The Co-Cu oxide catalyst with a Co:Cu molar ratio of 4:1 exhibited the best performance in ethanol gas-phase oxidation due to the synergistic effect between Co and Cu components and the presence of finely dispersed CuO particles on the surface of Co3O4.
Article
Chemistry, Physical
Yan Wang, Tong Shi, Qi-Yuan Fan, Yang Liu, Aiai Zhang, Zhaoqiang Li, Yanheng Hao, Lin Chen, Fenrong Liu, Xiaojun Gu, Shanghong Zeng
Summary: In this study, advanced spectroscopic and computational techniques were used to investigate the surface structure and reaction mechanism of tricomponent cerium-tungsten-titanium catalysts. The introduction of graphene oxide improved the dispersion of W and Ce species and resulted in specific bonding structures. The high dispersion of Ce facilitated the generation of oxygen vacancies, enhancing the adsorption and activation of NO and NH3. Experimental and theoretical evidence supported the feasibility of adsorption at low temperatures and revealed the reaction intermediates and interactions. The findings are important for understanding catalyst performance and developing new catalysts.
Article
Engineering, Environmental
Jiri Henych, Martin Stastny, Zuzana Nemeckova, Karel Mazanec, Jakub Tolasz, Martin Kormunda, Jakub Ederer, Pavel Janos
Summary: TiO2/CeO2 nanocomposites exhibit high degradation efficiency for various toxic compounds, with the combination of high surface reactivity of ceria and photoactivity of titania leading to synergistic effects and considerable application potential. The composites significantly enhance the degradation efficiency of toxic compounds, accelerating the degradation rate of chemical warfare agents.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Iryna Matsukevich, Natallia Kulinich, Ludmila Kulbitskaya, Tatyana Kuznetsova, Vadim Popkov, Maria Chebanenko, Dmitry Moskovskikh, Kirill Kuskov, Valentin Romanovski
Summary: Self-propagating high-temperature synthesis was used to create mesoporous CeO2 and MgO powders and nanocomposites based on them for efficient degradation of organic dyes. The interaction between magnesium oxide and cerium oxide was investigated to understand their influence on crystal structure, morphology, and microstructure. The study found that the sizes of CeO2 crystallites in the nanocomposites changed insignificantly and the photocatalytic activity of the samples was at least two times higher compared to analogs.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Tianyu Li, Matthew Leonard, Roman Tsyshevsky, Monica McEntee, Christopher Karwacki, Erin M. Durke, Maija M. Kuklja, Efrain E. Rodriguez
Summary: We conducted spectroscopic surface characterization on mesoporous ceria (CeO2) exposed to sarin gas (GB) and found that mesoporous CeO2 exhibits remarkable reactivity in dissociating GB under high vacuum. Spectroscopic results combined with density functional theory (DFT) calculations indicate that both the cleavage of P-F and P-OR bonds can lead to GB dissociation on CeO2 surfaces. Modeling reveals different dissociation pathways of GB on the (111)- and (110)-surfaces of ceria. We also observed some dissociation of GB on mesoporous CeO2 under ambient conditions. The discovery that mesoporous CeO2 can degrade GB under mild conditions is encouraging and highlights the potential of ceria-based materials in combating chemical warfare agents like the GB series.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Engineering, Environmental
Lin Peng, Anqi Guo, Dongdong Chen, Peng Liu, Baoxiang Peng, Mingli Fu, Daiqi Ye, Peirong Chen
Summary: In this study, highly dispersed and electron-deficient Cu-based catalysts were fabricated using nitrogen-doped carbon nanotubes as support. The Cu/NCNT catalyst outperformed other catalysts in terms of activity, selectivity, and resistance against water. The mechanism of the NH3-SCO reaction was also revealed. This research provides a new route for the design of highly active, water-tolerant, and low-cost Cu catalysts for reducing slip NH3 emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Larisa Pinaeva, Igor Prosvirin, Yuriy Chesalov, Victor Atuchin
Summary: CeO2-Al2O3 oxides were prepared by different methods, and Fe/Ce/Al samples with lower surface concentrations of Fe3+ showed higher activity in N2O decomposition, possibly due to higher oxygen mobility.
Article
Chemistry, Multidisciplinary
Pierrick Gaudin, Sophie Dorge, Habiba Nouali, Joel Patarin, Jean-Francois Brilhac, Emmanuel Fiani, Matthieu Vierling, Michel Moliere
COMPTES RENDUS CHIMIE
(2015)
Article
Chemistry, Applied
Maximilien Valente, Alain Brillard, Cornelius Schoennenbeck, Jean-Francois Brilhac
FUEL PROCESSING TECHNOLOGY
(2015)
Article
Thermodynamics
Pavel Maryandyshev, Aleksandr Chernov, Victor Lyubov, Gwenaelle Trouve, Alain Brillard, Jean-Francois Brilhac
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2015)
Article
Chemistry, Physical
May Issa, Alain Brillard, Valerie Tschamber, Jean-Francois Brilhac
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Chemistry, Physical
Pierrick Gaudin, Sophie Dorge, Habiba Nouali, Matthieu Vierling, Emmanuel Fiani, Michel Moliere, Jean-Francois Brilhac, Joel Patarin
APPLIED CATALYSIS B-ENVIRONMENTAL
(2016)
Article
Thermodynamics
Sami Zellagui, Cornelius Schonnenbeck, Nabila Zouaoui, Jean-Francois Brilhac, Olivier Authier, Emmanuel Thunin, Lynda Porcheron
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2018)
Article
Chemistry, Physical
M. Jeguirim, K. Villani, J. F. Brilhac, J. A. Martens
APPLIED CATALYSIS B-ENVIRONMENTAL
(2010)
Article
Chemistry, Physical
M. Labaki, M. Issa, S. Smeekens, S. Heylen, C. E. A. Kirschhock, K. Villani, M. Jeguirim, D. Habermacher, J. F. Brilhac, J. A. Martens
APPLIED CATALYSIS B-ENVIRONMENTAL
(2010)
Article
Thermodynamics
Kamel Guedri, Mohamed Naceur Borjini, Mejdi Jeguirim, Jean-Francois Brilhac, Rachid Said
Article
Energy & Fuels
Olivier Authier, Emmanuel Thunin, Pierre Plion, Cornelius Schoennenbeck, Gontrand Leyssens, Jean-Francois Brilhac, Lynda Porcheron
Article
Thermodynamics
N. Zouaoui, J. F. Brilhac, F. Mechati, M. Jeguirim, B. Djellouli, P. Gilot
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2010)
Article
Thermodynamics
Driss Laraqui, Olivier Allgaier, Cornelius Schonnenbeck, Gontrand Leyssens, Jean-Francois Brilhac, Ricardo Lomba, Clement Dumand, Olivier Guezet
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2019)
Article
Energy & Fuels
Theophile Vitoussia, Gontrand Leyssens, Gwenaelle Trouve, Alain Brillard, Alexis Kemajou, Ebenezer Njeugna, Jean-Francois Brilhac
Article
Chemistry, Physical
Youssef Berro, Damaris Kehrli, Jean-Francois Brilhac, Marianne Balat-Pichelin
Summary: The production of metallic powders using a Sol@rmet reactor at low pressure and with concentrated solar power was studied, with a focus on the effects of charcoal reducing agents and bentonite binder on metallic conversion. Experimental results showed the catalytic-like role of the bentonite binder in achieving high Mg yield and purity.
SUSTAINABLE ENERGY & FUELS
(2021)
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)
